Test method for molding surface deflection of car sun-roof visor

A detection method and technology for automobile sunroof, applied in the field of detection, can solve the problems of inability to obtain accurate deformation of product profile, unacceptable to consumers, and unsmooth movement of sunroof sunshade, so as to speed up product development cycle and save product development costs. Effect

Inactive Publication Date: 2010-02-24
WUXI GISSING AUTO PARTS CO LTD
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  • Abstract
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  • Claims
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Problems solved by technology

The car sunroof sun visor is mainly formed by pressing soft materials. The formed sun visor is easily deformed, resulting in gaps between the sun roof sun visor and the surrounding metal and plastic parts when loading the car, resulting in the unsmooth movement of the sun roof sun visor. When the vehicle is running, there will be abnormal noise
In the current situation that people have higher and higher requirements for the noise in the car interior, the noise caused by the deformation of the sunroof sunshade is unacceptable to consumers
Usually, the size profile of the sunr

Method used

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  • Test method for molding surface deflection of car sun-roof visor
  • Test method for molding surface deflection of car sun-roof visor
  • Test method for molding surface deflection of car sun-roof visor

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[0012] The present invention will be further described below in conjunction with specific drawings and embodiments.

[0013] The method for detecting the profile of the sunroof of the automobile includes:

[0014] a. Point cloud data collection: Fix the sunroof sun visor 1 on the gauge that detects the size and contour of the sunroof sun visor 1, and scan the curved surface of the sunroof sun visor 1 with Scanworks laser scanner. Scanworks scans 25%, 50% %, 100% three kinds of point density, set the corresponding point density; obtain the point cloud data of the curved surface of the sunroof sunshade 1; at the same time, use the Scanworks laser scanner to scan the three inspection reference holes 2 , Obtain the point cloud data of the three inspection reference holes 2 of the inspection tool for coordinate alignment;

[0015] b. Coordinate alignment: Import the curved surface of the sunroof sun visor 1 and the point cloud data of the detection reference hole obtained in step (a) int...

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Abstract

The invention relates to a test method, particularly a test method for a molding surface deflection of a car sun-roof visor, comprising the steps of: a) acquiring the dot data by fixing the sun-roof visor on a testing tool and scanning a curved molding surface of the sun-roof visor by Scanworks to acquire the dot data of the sun-roof visor and a basic hole, b) aligning the coordinates by leading the dot data into an Imageware software, testing the coordinate figure of the basic hole for fitting a circle and finding out the center coordinate, aligning the dot data with a 3D mathematical model by utilizing the center coordinate to align the sun-roof visor with the 3D mathematical model of the sun-roof visor, c) comparing the section lines by drawing out the section lines on the sun-roof visor and the 3D mathematical model thereof, and then directly calculating the molding surface deflection of the sun-roof visor by comparing the two section lines. The invention can rapidly, exactly and fully test the molding surface deflection of the car sun-roof visor.

Description

technical field [0001] The invention relates to a detection method, in particular to a detection method for the surface deformation of a sunshade plate of an automobile sunroof. Background technique [0002] At present, mid-to-high-end cars all have sunroof sun visors. The car sunroof sunshade is an important part that covers the car sunroof glass, can move back and forth, plays a decorative role, and has sound insulation and heat insulation performance. Car sunroof sun visors are mainly formed by pressing soft materials, and the formed sun visors are easily deformed, resulting in gaps between the sun roof sun visor and the surrounding metal and plastic parts when loading the car, resulting in unsmooth movement of the sunroof sun visor. There will be abnormal noise when the vehicle is running. In the current situation that people have higher and higher requirements on the noise in the car interior, the noise generated by the deformation of the sunroof sunshade is unaccepta...

Claims

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Application Information

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IPC IPC(8): G01B11/24G01B11/16
Inventor 姬振营
Owner WUXI GISSING AUTO PARTS CO LTD
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